The in-game explanation for the card game as it presented on Azeroth is what I'm asking about. Was the card game created by a retired adventurer that just happened to retire as an innkeeper? The game itself is more a whimsical take on Warcraft lore but I'd like to think that in-game it was conceived as such. Also is the innkeeper a magically inclined user? Now I realize that the "Innkeeper" could've just heard stories from people going in and out as expansions came and went and just changed it up a bit. Anyone got canon or even head-canon explanations?
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Also interestingly according to Bob who is an innkeeper for Bob's Tavern in BG mode, he said he once served a death knight a drink and it just instantly froze. So being undead does not mean you can't enjoy food or drinks?